Silicon nitride valve
Feature:
Wear resistance: hardness about 94HRA and has seIf-lubricating properties.
High temperature resistance: temperature resistance up to 1400℃.
Chemical stability: Excellent acid and alkali corrosion resistance and no react with most of materials
Application:
1) Machinery industry: Silicon nitride ceramic shaft balls can be widely used in electric spindles of high-speed machine tools, bearings of wind turbines, and high temperature and corrosion resistance fields;
2) Metallurgical industry: due to the non-wetting characteristics of silicon nitride ceramics and aluminum liquid, silicon nitride ceramic parts are widely used in aluminum smelting and casting, such as protection tubes, riser tubes, hooks, etc .; silicon nitride ceramic resistance The water ring can be applied to non-destructive flaw detection units for seamless steel tubes; silicon nitride metallurgical rolls can be used for steel production, etc .;
3) Petroleum industry; can be used for petroleum exploration, etc .;
4) The field of high temperature wear resistance and corrosion resistance; silicon nitride ceramic positioning blocks can be used in the production of titanium sponge; silicon nitride ceramic inserts are used in the high temperature reflux area of supercritical industrial boiler swirl burners, etc .;
5) In the field of wave-transmitting materials; due to its excellent wave-transmitting properties, silicon nitride ceramic plates can be applied to the roof of microwave ovens, the detection windows of level gauges, etc .
6) Auto parts: such as rocker inserts, turbine rotors, cam tappets, etc.
Sintering method | Density g/cm3 | Flexural strength MPA | Microhardness HV10 | Fracture toughness MPA.M1/2 | Elastic Modulus GPA |
Air pressure sintering | >3.2 | 750-1000 | 1500-1700 | 7-8 | 310 |

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